“I do weights, which I think a lot of women are scared of,” 25-year-old Decker told Us Magazine. “I think it’s so important to do weights, because they don’t make you bigger — they make you more lean and toned and all that good stuff.”

She’s not the only celeb who’s revealing her secrets to a hot bikini bod.

Jessica Alba gets her envious figure with help from a guy named Barry. The 31-year-old mother-of-two participates in LA-based classes at Barry’s Bootcamp; they incorporate high-intensity cardio intervals and strength training. She also tries to only munch on lean proteins, grains and vegetables, as reported by FitSugar.

Adriana Lima been able to snap back into shape after having kids, too; the 31-year-old gave birth to her second child, daughter Sienna, on Sept. 12. Her trainer Michael Olajide Jr.exclusively told Celebuzz that the Victoria Secret Angel’s engages in two-a-day workouts, seven days a week.

“But not just simple punching — complex combinations that require her to execute a series of drills at a high rate of speed and power,” Olajide said. “This keeps her mind sharp and involved. There’s also jump rope.

“That’s also an intense all-over body workout that torches an immense amount of calories. But again, this isn’t jump rope you see in the playground. This is athletic/boxer-styled jump rope and then some.”

Looking for even more diet/finess tips? Launch the gallery above to see how other stars like Beyonce, Vanessa Hudgens and Kelly Osbourne get their amazing bikini bodies. Then tell us: Which secret do you think will work best — and which do you plan on trying?

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